Now that I am done traveling for awhile I am going to get serious
about measuring the p-port intake manifold pressure wave at different RPMs.

I will order this low cost data acq system and hook it up
to the kind of pressure sensors Tracy is using.
That way we don't need to open Tracy's computer.
Also we will learn a lot about tuned p-port intake systems on the
rotary. Right now we have only a snippet amount of data from
Mazda.

I'll also trigger it off the ignition pick up so the data
can be correlated with the ignition pulse angle.
http://www.labjack.com/labjack_u3.php?prodId=52


I don't need this info for the 555 system or the Holley carb but
there are a lot of people out there with Tracy's system that need help.
The 555 uses the mass airflow sensor that works far better than just
sampling the intake manifold pressure once per rev.


Paul Lamar